Answer:
dominant to
Step-by-step explanation:
The answer is "dominant to".
When two things are combine or put into reaction and the result of the combinations shows mainly the constituents of one thing only surpassing the other thing, then that things which excels or is in greater proportion is said to be dominated.
Since the cross offspring of a black-eyed cat and an orange-eyed cat have black eyes, the allele for black eyes is said to be dominating the allele for orange eyes.
Thus the answer is "dominant to".